Tijana D. Petrašinović Mileta was born October 30, 1989, in Belgrade. After graduating from primary and secondary school in Belgrade, she received her Bachelor of Science degree at the Faculty of Mechanical Engineering of the University of Belgrade in 2011 (average grade 9.12/10.00) with the thesis: Beam theory applied to wind turbine blades.
In 2013, she received her Master of Science degree at the Faculty of Mechanical Engineering of the University of Belgrade (average grade 9.75/10.00) with the thesis: Structural analysis of a fighter jet wing repair.
During her studies, she was a scholarship holder of the Ministry of Education, Science, and Technological Development of the Republic of Serbia.
From 2013 to 2015, she was employed in JAT Tehnika, a large company specialized in commercial aircraft maintenance, as a power plant engineer (jet engine maintenance engineer).
In December 2016, she started a private engineering and technical consulting company. Since July 2020, she is engaged in PRDC as a full-time aerospace engineer. She was appointed to the position of company director in 2021.